Hand of Fate 2

I couldn't get this with Veles. I got it with Hubie (goblin). You need to have over 100 life when you land on the card and select the 3 trainings.

Best to do this in a mission rather than Endless. Pad your deck with a few cards for raising Max Health such as Alchemist (you can filter for this).

First, you need to complete an encounter with Grobben ("La Fosse" in french. translation should be "The Pit" or "The Den"), in order to unlock a tocken. This card unlocks when you complete the Servant Challenge once.

This token unlocks a new card (Grobben training) with a shadow shard. Add this new card to your deck and complete the trial (2 or 3 fights)

Achievement unlocked !